Lock



Nov. 4, y1941. c. couR-rNY LOCK Filed April 25, 1940 v 5 sheets-sheet 1ATTORNEYS Nov. 4, 1941. c. couRTNEY LOCK Filed April 25, 1940 5Sheets-Sheet 2 lNVENTOR Cha-rales Cou'nelaf WITNESSES 'ATTO RNEYS Nov.4, 1941. cz. couRTNEY 2,261,796

LOCK

Filed April 25, 1940 5 Sheets-Shkeeb 3 WITNESSEB INVENTOR M ATTORNEYSPatented Nov. 4, 1941 ilNiTED STATES 'F'TENT GFFIC LOCK v CharlesCourtney, New York, N. Y. Application April 25, 1940, Serial No.331,545, 18 Claims. (Cl. Z0-142) This invention relatesto'locks andparticularly to an improved lock which may be used as an automaticdeadlock in connection with sliding doors or swinging doors, an objectbeing to provide a construction which is simple in its detail structureand which, at the Sametime, presents a very strong ecient lockingdevice.

Another object of the invention is .to provide an improved constructionwhich will function when used in connection with a sliding door toslightly open the door as the locking mechanism is moved to an unlockedposition.

An additional object of the invention is to provide an improvedconstruction wherein the keeper and the casing of the lock overlap theopening between the door and the door jamb, whereby access to thelocking bolt is prevented. 1

An additional object ofthe invention is'to. provide a locking structurewhich may be used as a deadlock or may be used with a key, .tumblerlock, or the like, to manipulate the bolt from either side of the door.

In the accompanying drawings- Y Fig. 1 is a sectional view through Fig.3 approximately on the line I-I l Fig. 2 is a transverse sectional Viewthrough Fig. 1 approximately on the line 2 2;

Fig. 3 is a horizontal sectional view through Fig. 1 on the line 3 3,Athe same disclosing an embodiment of the invention;

Fig. 4 is a perspective viewof the bolt shown in Figs. 1 and 3;

Fig. 5 isl a sectional View line 5 5, the separated;

Fig. 6 is an edge view of the lock shown in Fig. 3;

Fig. 7 is an edge view of the keeper and keeper plate shown in Fig. 3;

Fig. 8 is a perspective view ofthe keeper shown in Fig. 7; o

Fig. 9 is a perspective view of the upper part of the keeper and keeperplate shown in Fig. 7

Fig. 10 is a perspective View of the bottom plate of the casing, thesame embodying certain features of the invention;

Fig. 11 is a sectional view through a wall, a hinged door, and a lockembodying the invention applied thereto;

Fig. 12 is a perspective view of the keeper and keeper mortise plateshown in Fig. 10.1

As illustrated in Figs. 1 to 3, the complete lock structure is appliedto a sliding door shown'- with a tumbler lock I of any conventionalkind. This through Fig. 3 on the keeper and lock casing being shown lockis provided with alocking 'p1ate`2 offthe 55 .vided with a slot 2l lockI, or for receiving a key in case a key is to usual kind so that whenalkey is inserted into the lock I the plate 2 maybe rotated foractuating the bolt 3. If desired,.the tumbler lock I may be eliminatedand when this is the case the lock embodying the invention will act asanl automatic deadlock, as it can be operated vfrom only one side of thedoor. By using a key or a tumbler lock I, the lock embodyingtheinvention may be actuated from either side of the door.

The bolt 3 is arranged in the casingll and has a bottom plate 5 securedto the door 6 in any suitable way, as for instance by screws 'I and 8.It will be observed that plate 5 is L-shaped with a section or iiange 9embedded in the edge of the door 6, while the body Iiil of the plate issecured by screws I flatwise against the `inner surface of the door 6. o

As illustrated in Fig. 10, the bottom plate 5 is provided with lugs II,I2, I3 and I4. Eachof these lugs is provided with a threaded aperturefor receiving a clamping screw whereby the bottom may be rigidly securedto the casing 4. This casing is provided with suitable apertures forreceiving the respective clamping screws I5. In addition, the bottomplate 5 isprovided with a ange I3 offset from the front of the ilange`9, as shown in Figs. 3 and 10, wherebythe protecting lug I'I may overlapthe ange 9 and thereby prevent anyone from passing an instrument betweenthe door 6 and the jamb Ii when the lock is in its locked position. Itwill be observedthat the protecting lug I'I merges into What may betermed ejecting or opening lugs I8 and I9 which coact with certain partsof the bolt, as herein. after described, for slightly opening door 6 asthebolt 3 is being moved to an unlocked position. It will also be notedthat the body IU of bottom plate 5 is provided with an aperture foraccom modating the sleeve 26. The sleeve 20 is D110- for receivingtheplate 2 of be used. Sleeve 20 is rotatably mounted in the bottomplate 5 and is provided with a pair of' bolt-retracting arms 22 and 23(Fig. 5) whereby when sleeve 2E! is rotated the proper distance ineither direction, one or the other of these arms will engage the post 24and thereby .rotate the,

bolt 3 so as to move the same to a locked or unlocked position as thecasemay be.

The casing 4 has been shown as rectangular (Fig. 5) but it could be someother shape without departing from the spirit of the invention.

Preferably cast integral with the casing 4-is a ,4 double cam 25 havingopposite cam-waysorsurl V:faces 26 and 21, which at the centermergeintoas shown in Fig. 4. This "43 strikes the luga recess 23 and at one endinto a shoulder 29 and at the other end into a notch 39. This isillustrated particularly in Fig. 1 and in this figure it will be seenthat the cam structure 25 is substantially U-shaped with the open endfacing the keeper 3| when the lock is in functioning position. Arrangednear the open end of the double cam 25 is a round aperture 32 (Fig. 3),which accommodates a hollow boss 33 formed integral with and extendingfrom the bolt 3. The boss 33 is provided with an annular shoulder 34,which is adapted to receive the top of the boss 35 which is integralwith the casing 4. In'r v the bearing sleeve 33 the aperture ispreferably square in cross section so as to receive the squaredextension 36 of a thumb member 31,

whereby when thumb member 31 is 'rotated sleeve 33 and bolt 3 will berotated. A screwl 381clamps bolt 3 to the extension 36 so that when thescrew 38 is in functioning position these two members function as asingle unit.

. As illustrated in Fig. 4, bolt 3 is provided with a substantiallyrectangular body 3' having lat one enda locking flange 39 and at theother enda notch 4U. By reason of the notch 40 there is provided aforked construction or arms 4I and '42. Opening lugs 43 and 44 arepreferably formed' integral with thebody 3 and coact with theprojectinglugs I8 and I9 to move the sliding door a short distance or partiallyopen when the 'bolt 3 is moved to an unlocked position. A -swinging arm45 is pivotally connected at 46 lon the body 3' and at its outer freeend is provided With a pin 41 on which a roller 48 is rotatably mounted.A stop or abutment 49 is also carried at the outer end of arm 45 andagainst this stop or abutment the end portion of spring 5Ilpresses.Spring 59 has a coil 5I surrounding .pin 52 carried bythe body 3' sothat as the short end 53 of the spring rests against the lug 54, therewill be a continuous tendency of the long end 53 of the spring to pressagainst the stop 49 and swingrthe free end of arm 45 outwardly.The-spring is under continuous tension and, consequently, there is acontinuous tendency to swing the roller 48 outwardly or toward the left,causes the roller to followl the cam surface 21 and to snap into thenotch 39 when moved to the position shown 1in Fig. 5. When the bolt ismoved to the diametrically opposite position to that shown in Fig. '5,roller 48 will move on to the shoulder 29 and thereby be held againstreturn movement. When the bolt is-in the position shown in Fig. 1, the

-spring is under the least tension, and when the bolt is swung to eitherof its extreme positions, Aasfor instance to the position shown in Fig.5, the spring is under its greatest tension. The opening lugs 43 and 44prevent the bolt from -swinging farther than the position shown in Fig.l5, as these lugs are adapted to strike casing 4. rAt each end of 'theflange I6, there is provided a notch or cutout '.55 in the casing 4 andthe locking. flange 39 on the bolt 3 is adapted to be` moved throughthese cutouts as it moves in either direction to a locked or unlockedposition. VWhenritis rotatedA one-quarter of a turn in a givendirection, thek bolt will swing around to the position shown in Fig. 5,and as the lug I9 the door will be pushed to a slightly open position sothat the fingers of a `person may be inserted, if desired, between the-lock and keeper and the door slid to a fully open position. y v Y M Thekcp'er, as shown particularly in Figs. 7,. .8

and 9, is really formed in two major parts, but for the purpose ofdescription the part 3I will be termed the keeper and the part 3| willbe termed the keeper mortise, which is secured to the keeper by screws56. Th mortise plate 3I is also secured by screws 51 to the jamb 6'.From Fig. 9 it will be observed that the mortise plate 3| is providedwith a flange 58 and this flange is secured to the jamb 6 by wood screws59. It will be seen, therefore, that the mortise plate is thoroughlysecured to the jamb 6 and is strongly secured to the keeper 3I by thescrews 56. The mortise plate 3I' is provided with the protecting bar I1and with the opening or ejecting lugs I8 and I9. As illustrated,particularly in Figs. 7 and 8, the keeper is provided with a flangemember Gwhich is formed with an inner arc-shaped surface 6I around whichts the locking flange 39 when the bolt 3 is in locking position. Inorder to permit the bolt 3 to move to locking position, the keeper isprovided with a slot 62 merging `into notches 63 and 64. As the door 6is;.being slid toclosed ,position the bolt will vbe moved from theunlocking position to locking position.` vOne, end of flange 39 movesinto one of the notches 63 and'64, one` of the lugs I8 or I9 will press'against one of the opening lugs '43 or 44 to move' the roller 48 out ofnotch 30 `orl'off the shoulderv 29, and as soon as the roller leaveseither of thes'e places spring 50 will functio'n to quickly swing thebolt to its lockingv position, as shown in Fig. 1. By reason of thisconstructiona .quarter turn of the thumb member will not only unlock thelock but will for'ce the, sliding door 6 ajar.

When the door is open and it is desired to close -and lock the same, itis only necessary to slide -thedoor 6 over until one of the opening lugsI8 and I9 strikes one of the lugs 43 or 44 and the :door will notonly beclosed but bolt 3 will be automatically moved'to its locking position,as shown in Figs. 1 and 3. It will be noted, therefore, that uponclosing the door the lock will automatically function to lock the doorclosed. It will then be necessary to operate the thumb member 31 to openthe door or to operate the tumbler lock I, as the case may be. Theunlocking of the door simultaneouslyv opens the door slightly and theclosing of the door automatically locks the door closed.

While the lock has been described in detail in respect to a slidingdoor, it could be slightly changed. and used on a swinging door, as forinstance door'6 shown in Fig. 11. In this form of th'e invention, thelock 65 is identical with that shown in Figs. l and 2, and the keeper 66is identical with keeper 3l, but the keeper moruse plate s1 has-the barn eliminated and aise y the lugs I8 and I9. Aside from this change theyare identical. Itis necessary to eliminate lugs I8 and I9 and bar I1 inorder that the door' may lfswingopenand closed. In this form of theinvention when the door is closed it does notautomatically lock but byrotating the thumb member 31 -a quarter of'a revolution the bolt will bemoved to the locking position, as indicated particularly in dotted linesin Fig. 1-1. In this form of the invention, 'the lock is avdeadlock/butyif desired, a keyhole and a proper key may be pro- -videdor the tumblerlock I and associated parts could be usedwithout departingfrom the spirit iof the invention.

. '.11'. A`v lockfora sliding door including a casing, :ialb'oltv-rotatably 'mounted in said casing and c will move out of the casingand then back into the casing, said lend portion having a locking angeadapted to interlock with a suitable keeper, a pair of spaced ejectinglugs carried by said bolt, said ejecting lugs being positioned so thatAwhen the bolt is rotated in one direction to an unlocked position oneejecting lug will engage said keeper and force the door to a partly openposition and when rotated in the other direction the other ejecting lugon the bolt will cooperate withV said keeper for forcing the door to apartly open position.

2. A lock of the character describedincluding a casing, a double camarranged in said casing formed-substantially U-shapeda at bolt rotatablymounted in said Icasing, means for rotating said bolt Aso that one endmay be moved into and out of said casing, a pivotally mounted armvcarried by said bolt having one end frictionally engaging the innersurface of said U-shaped double cam, and a spring carried by said boltacting on the free end of said arm for continually pressing the same ina direction to cause a friction between the arm andthe inner surface ofsaid camywhereby there will be a continuous tendency to cause said boltto swing so that one end will project out of said casing, said camb'eing provided with a central notch, and m'eans functioning as a notchat each end of said cam, said notches being adapted to be engaged bythe* free end of said arm as the arm is moved from one position to theoth'er, said notches functioning to hold the bolt in any of threepositions. 3. A lock of the character described including a casing, asubstantially U-shaped cam positioned in said casing and rigidly securedthereto, the inner surface of the cam acting as opposing cam faces, saidcam at the junction of said opposing faces being forrned with a recessand each end of the cam being formed with a formation lunctioning as anotch, a flat bolt positioned to move over said cam and be rotated sothat one end may be moved into and out of the casing, the opposite endof said bolt being provided with a pair of stops for limiting the inwardmovement of the bolt in either direction, manually actuated means forswinging the bolt to an outer or inner position, a spring-pressed armcarried by said bolt and a roller carried by the free end of said arm,saidroller being adapted to interlock with said recess at one time andwith one of the notches at another time so as to hold the bolt in eithera locked position or an unlocked position. Y

4. A lock of the character described including a casing formed of castmetal and provided with an integral U-shaped cam and an edge havingnotches therein, a fiat bolt rotatably mounted in said casing, said bolthaving an upstanding flange adapted to pass through said notches whenrotated, and means carried by the bolt coacting with said cam fortending to hold the' bolt in its locked position or in an unlockedposition.

5. In a lock of the character described, a casing formed of cast metaland provided with an integral U-shaped double cam, said cam at theclosed end having a recess, at the outer end of one of the arms of thecam a recess and at the outer end of the other arm a shoulderfunctioning as a recess, a iiat bolt pivotally mounted in said casing,means extending exteriorly of the casing for permitting manual rotationof the casing, 75

and a spring-pressed member carriedby said cam continuallypressingagainstsaid cam, said spring- 'pressed'l member being adapted'to snap into said recess, said notch, or n top of said shoulderaccording tothe position of the bolt for holding the -boltin any oithreepositions.

6. In a lock of the character described, a bolt formed aslaiiat plateandprovided at one end with an upstandinglocking flange, a sleeve onVthe plate protruding centrally for receivinga pivotal support, apost'onfthe plate near the aperture of the sleeve and between theaperture` and said flange, said post extending inthe opposite clirectionto said flange, and a lug on the same'face of said plate as said post ateach of the corners opposite said flange. l Y

7. 'A lock of the character described including a `casing havinginteriorly thereof a U-shaped cam, a iiat plate acting asa boltpivotally mounted in the casing, the pivotal mounting being adjacent aline drawn across the open end of the U-shaped cam and an equalAdistance between the outer ends of the arms of the cam, whereby the boltmay swing on its pivot in a plane parallel to the side ofthe cam, meansvfor pivotally mounting said bolt, said means extending to a pointexterior of the casing so as t0 manually actuate it for swinging one endof the bolt into andout of thecasing, said bolt at one end having anupstanding flange and at the other end a pair of spaced lugs acting asstops for limiting the rotary movement'of the bolt, an arm pivotallycarried by the end of the bolt adjacent said lugs, a roller carried atthe free end of said arm, said roller being positioned to move over theinner surface of said cam, and a spring carried by the bolt acting onthe free end of said arm for causing said roller to continually remainin contact with the inner surface of said cam, whereby the g bolt willbe given a tendency to remain in either of two inner positions, or in a'single o-uter or locked position.

8. A lockof the character described including a casing, a nat boltpivotally mounted in the casing, said bolt being mounted so that one endmay swing into and out of said casing eitherto the right or to the left,said bolt being provided with an upstanding post adjacent the pivotalmounting, a bottom plate for said casing, a sleeve rotatably mounted insaid bottom plate, said sleeve being provided with a pair of oppositelyextending arms positioned to engage said post and swing the bolt to theright or left according to the position of the bolt so as to move thebolt into and out of said casing, and means coacting with said sleevefor rotating the same.

9. A lock of thecharacter described including a casing, a bolt rotatablymounted in said casing,

and means extending to a point exterior of the casing for rotating thebolt, said bolt having an ejecting lug at one end, engageable with asuitable keeper as the bolt is swung to an unlocked position, wherebysaid casing and the door connected therewith will be forced away fromsaidbolt presses on the tened will be forced away from said keeper aseither one of said lugs presses on the keeper.

11. In a lock, a casing, a rotatory locking bolt movable into either oneof two unlocking positions and which lies wholly Within said casing inits unlocking position and which projects `from the casing in itslocking position, and coacting means on said bolt and casing whichreleasably retains the bolt in its unlocking position and which alsoserves to move said bolt into its locking position for engagement with asuitable keeper after the bolt has been released by a force exertedthereon by encountering said keeper.

12. In a lock, a casing, a rotatory locking bolt which lies WhollyWithin said casing in its unl locking position and which projects fromthe casing in its locking position, and spring actuated means on saidbolt which coacts with cam means on said casing. which releasablyretains the bolt in its unlocking position and Which also serves to movesaid bolt into its locking position for engagement with a suitablekeeperafter the bolt has been released by a force exerted thereon byencountering said keeper.

13. In a lock, a casing, a rotatory oblong locking bolt having anarcuate locking flange on one end which lies Wholly Within said casingin its unlocking position and which projects from thecasing in itslocking position, and coacting means on said bolt and casing Whichreleasably retains the bolt in its unlocking position and Which alsoserves to move said bolt into its locking position for engagement with asuitable keeper after the bolt has been released by a force exertedthereon at one side of its axis of rotation by encountering said keeper.

14. In a lock, a casing, a rotatory locking bolt which lies WhollyWithin said casing in its unlocking position and which projects from thecasing in its locking position, an indented cam on said casing andspring actuated means on said bolt which releasably retains the bolt inits unlocking position and which also serves to move said bolt into itslocking position after the bolt exerted on the locking member at oneside of its has been released by a force exerted thereon, 54,5

and means for manually moving said bolt into its unlocking position andfor releasing it therefrom.

l5. In a lock, a rotary oblong locking member,

and means constantly acting on said member to (50 releasably retain itin either one of two unlocking positions and capable of moving it into alooking position when released, said means functioning to move thelocking member into its locking Vposition when in response to pressureaxis of rotation 'the member is first moved out of its unlockingVposition a certain degree to release the same. Y

16. In al lock, a casing, a rotary locking member rotatable to the rightor left into and out of a locking and an unlocking position, and meansconsisting of a cam on said casing and a spring actuated detentcooperating' with said cam constantly acting on said member toreleasably retain it in an unlocking position and capable of-moving itinto a locking position when released, said means functioning to movethe locking `member into its locking position when in response topressure exerted on the locking member at one side of its axis ofrotation the member is rst moved outl of its unlocking position acertain degree to release the same.

17. In a lock, la casing,a rotating locking bolt which lies,V WhollyWithin said casing in its unlocking position and which projects from thecasing in its lockingv position, and coacting means on said bolt andcasing which releasably retains the bolt in its unlocking and also itslocking position when moved thereinto, said coacting means also servingto move said bolt into its locking position for engagement with asuitable keeper after the bolt has been released from its unlockingposition by a force exerted on the bolt by encountering said keeper,said coacting means consisting of a spring-pressed detent carried by.said bolt and an indented formation on said casing.

18.In a lock, a casing, a rotary bolt which lies Wholly within rsaidcasing in its unlocking position and-Which projects from the casing inits locking position, an indented cam surface eccentric to the axis ofsaid bolt embodied by said casing, a pivoted detent carried by saidbolt, a compression spring carried by said bolt, one end of said springbearing on said detent and its opposite end bearing on a lug on saidbolt, the provision `and arrangement of parts being such that the detentengages in an indentation in said cam surface to releasably retain thebolt in an unlocking position with said spring compressed and wherebythe spring causes the movement of the bolt to its locking position afterthe bolt is released from its unlocking position by the application of aforce on the bolt at one sidey of-its axis of rotation due to the detentmoving along said cam surface in contact therewith.

CHARLES COURTNEY.

